Unable to Set Verified Publisher via Microsoft Graph API – verifiedPublisherId Not Found

Question

Unable to Set Verified Publisher via Microsoft Graph API – verifiedPublisherId Not Found

Bence Kiszel 0

Hello,

I am trying to set the verified publisher for an Azure AD B2C application via the Microsoft Graph API, but I am encountering the following issues:

What I am trying to do:

I am calling the following Microsoft Graph endpoint:

POST https://graph.microsoft.com/v1.0/applications/{applicationObjectId}/setVerifiedPublisher

With this request body:

{ "verifiedPublisherId": "Redacted" }

Issue:

When I try to set the verified publisher manually, I receive this error:

{
    "error": {
        "code": "MPNAccountNotFoundOrNoAccess",
        "message": "The MPN ID you provided (Redacted) does not exist, or you do not have access to it. Please provide a valid MPN ID and try again.",
        "innerError": {
            "date": "2025-04-23T14:29:29",
            "request-id": "6587f94a-85ec-485b-972f-51f9f06924d4",
            "client-request-id": "6587f94a-85ec-485b-972f-51f9f06924d4"
        }
    }
}

Additional context:

I have already associated my Azure AD B2C tenant with Partner Center in the Developer tab and see it listed under Account Settings → Tenants.
My application exists in the correct B2C tenant and has the correct appObjectId.

What I need help with:

Where to find the MPNID or verifiedPublisherId?.
Ensure that my B2C tenant is recognized as a verified publisher and eligible to call setVerifiedPublisher.
Why do I get this error?

Thank you in advance!
Bence Kiszel

1 answer

Your answer

Answer 1

Finlay Thomas 0

You're getting the MPNAccountNotFoundOrNoAccess error because the MPN ID you're providing is either incorrect or your tenant doesn't have access to it.

What to check:

MPN ID (verifiedPublisherId): Log in to Partner Center, go to Account Settings > Organization Profile > Partner Profile. Use the primary MPN ID, not a location-specific one.
Tenant association: In Partner Center, under Developer > Tenants, make sure your B2C tenant is listed and marked as Verified.
Permissions: Ensure the user calling the API has the right permissions (e.g. Directory.ReadWrite.All, AppRoleAssignment.ReadWrite.All) and is a global admin in both Partner Center and the B2C tenant.

Why the error happens:

Usually it's due to:

Incorrect or unverified MPN ID

B2C tenant not properly linked

Insufficient permissions

Bence Kiszel 0 Reputation points

2025-04-23T19:24:45.6233333+00:00

Thanks for the answer!

I believe we can rule out the permissions part I’m using the Microsoft Graph API Explorer, and I’m fairly certain I’m logged in with a global admin account for both the Azure AD B2C tenant and Partner Center. However, I’d appreciate guidance on how to confirm this if the user is a Partner Center admin.

Regarding the B2C tenant association, I do see the AD B2C tenant listed under Partner Center > Developer > Tenants, but I don’t see a “Verified” badge or status there. Could you clarify what exactly to look for on that page? If it’s supposed to be “Verified,” where would that label appear?

And for the MPN ID: You mentioned checking the primary MPN ID from Partner Center. Could you please be more specific? Which exact page or section should I visit to find the correct one (as opposed to a location-specific ID)? If you have an example screenshot or can point me to the exact navigation steps, that would be really helpful.

Thanks in advance!
Bence Kiszel

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Unable to Set Verified Publisher via Microsoft Graph API – verifiedPublisherId Not Found

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